Gerd Grimm's method of drawing with charcoal pencil and coloured ink inevitably produced a series of uncoloured sheets. This is by no means an indication that Grimm did not consider this to be worthy of being colored later on, which, of course, in many cases - and for various reasons - often did not happen. It rather documents his way of production, to draw everywhere and in every situation - often also on the way - with the handy charcoal pencil, but not the large ink box.

Nevertheless, Grimm's graphic oeuvre has a genuinely sketchy quality, just because he always traced life as closely as possible in his time arrest in order to fix it. Thus Grimm's artistic ideal was and remained the loosely thrown in and yet at the same time already completed drawing, as it seemed to arise again and again as if by itself, especially with the sweeping and flying lines of the fashion subjects. Dirk Lehnig, advertising director of the Badische Tabakmanufaktur at the time, put it this way: "His drawings do not know any difference between a pure sketch and a finished design. They are both at the same time, sketchy in technique, ready in their artistic form and expression. Sketchiness is just as much a compositional element as the unconventional, often risky colouring that contributes to the dramatic effect."